規格
| 屬性 | 價值 |
| Package | Tape & Reel (TR),Cut Tape (CT),Bulk |
| Series | 74HCT |
| ProductStatus | Active |
| LogicType | D-Type Transparent Latch |
| Circuit | 8:8 |
| OutputType | Tri-State |
| Voltage-Supply | 4.5V ~ 5.5V |
| IndependentCircuits | 1 |
| DelayTime-Propagation | 25ns |
| Current-OutputHighLow | 6mA, 6mA |
| OperatingTemperature | -40°C ~ 85°C |
| MountingType | Surface Mount |
| Package/Case | 20-SOIC (0.295, 7.50mm Width) |
概述
Description
The SN74HCT573DWR is a high-speed CMOS octal transparent D-type latch with 3-state outputs, part of Texas Instruments' SN74HCT series. It is designed for use in a wide variety of digital applications, providing the capability to latch data from input to output. The device features eight latches that are controlled by a common latch-enable (LE) input and an output-enable (OE) input. When LE is high, the latches are transparent, meaning the output follows the input. When LE transitions to low, the data present at the inputs is latched and held at the outputs until LE is high again.
The OE input controls the state of the outputs. When OE is low, the outputs are enabled and reflect the logic states of the latches. When OE is high, the outputs are in a high-impedance state, which effectively disconnects them from the circuit, allowing for bus sharing.
The SN74HCT573DWR operates with a supply voltage range of 4.5 V to 5.5 V, making it suitable for 5 V logic systems. It is housed in a surface-mount SOIC-20 package, ideal for compact and high-density circuit designs.
The OE input controls the state of the outputs. When OE is low, the outputs are enabled and reflect the logic states of the latches. When OE is high, the outputs are in a high-impedance state, which effectively disconnects them from the circuit, allowing for bus sharing.
The SN74HCT573DWR operates with a supply voltage range of 4.5 V to 5.5 V, making it suitable for 5 V logic systems. It is housed in a surface-mount SOIC-20 package, ideal for compact and high-density circuit designs.
Equivalent
The SN74HCT573DWR is an octal D-type transparent latch with 3-state outputs. Equivalent products include:
1. 74HC573 series from manufacturers like NXP, ON Semiconductor, and STMicroelectronics.
2. CD74HCT573 from Texas Instruments.
3. MC74HC573A from ON Semiconductor.
4. TC74HC573A from Toshiba.
These alternatives have similar functionality and electrical characteristics, making them suitable replacements. Always verify pin configurations and specific datasheet parameters for compatibility.
1. 74HC573 series from manufacturers like NXP, ON Semiconductor, and STMicroelectronics.
2. CD74HCT573 from Texas Instruments.
3. MC74HC573A from ON Semiconductor.
4. TC74HC573A from Toshiba.
These alternatives have similar functionality and electrical characteristics, making them suitable replacements. Always verify pin configurations and specific datasheet parameters for compatibility.
Features
The SN74HCT573DWR is an octal transparent D-type latch with 3-state outputs, belonging to the 74HCT series from Texas Instruments. Key features include:
1. Operating Voltage: Typically operates within a 4.5 to 5.5 V range, suitable for standard 5V systems.
2. Latch Functionality: Provides eight latches, controlled by a common latch enable (LE) and output enable (OE) signal, allowing for transparent (flow-through) or latched data retention.
3. 3-State Outputs: The outputs can be put in a high-impedance state, facilitating bus driving and reducing bus contention.
4. High-Speed Operation: Designed for high-speed applications with propagation delays typically measured in nanoseconds, enabling fast data handling.
5. Low Power Consumption: Consumes little power, making it ideal for power-sensitive applications.
6. Input Compatibility: TTL-compatible inputs, which can interface easily with TTL and CMOS logic levels.
7. Package: Available in a 20-pin SOIC (small outline integrated circuit) package, designated by the "DWR" suffix, suitable for surface-mount technology.
These features make it suitable for a wide range of applications, including data latching, storage, and interfacing in digital systems.
1. Operating Voltage: Typically operates within a 4.5 to 5.5 V range, suitable for standard 5V systems.
2. Latch Functionality: Provides eight latches, controlled by a common latch enable (LE) and output enable (OE) signal, allowing for transparent (flow-through) or latched data retention.
3. 3-State Outputs: The outputs can be put in a high-impedance state, facilitating bus driving and reducing bus contention.
4. High-Speed Operation: Designed for high-speed applications with propagation delays typically measured in nanoseconds, enabling fast data handling.
5. Low Power Consumption: Consumes little power, making it ideal for power-sensitive applications.
6. Input Compatibility: TTL-compatible inputs, which can interface easily with TTL and CMOS logic levels.
7. Package: Available in a 20-pin SOIC (small outline integrated circuit) package, designated by the "DWR" suffix, suitable for surface-mount technology.
These features make it suitable for a wide range of applications, including data latching, storage, and interfacing in digital systems.
Pinout
The SN74HCT573DWR is an octal D-type transparent latch with 3-state outputs. It comes in a 20-pin package. The pin functions are as follows:
1. Q1 - Q8 (Pins 3-6, 8-11, 13): These are the 3-state latch outputs.
2. D1 - D8 (Pins 2, 5-7, 12, 15-17, 19): These are the data inputs.
3. LE (Pin 11): Latch Enable input. When LE is high, the latches are transparent, allowing data from D to Q.
4. OE (Pin 1): Output Enable input. When OE is low, the outputs are enabled; when high, the outputs are in a high-impedance state.
5. VCC (Pin 20): Supply voltage pin.
6. GND (Pin 10): Ground pin.
The device is typically used in applications requiring temporary data storage, such as buffering or interfacing between asynchronous buses, due to its capability of retaining data and controlling output states.
1. Q1 - Q8 (Pins 3-6, 8-11, 13): These are the 3-state latch outputs.
2. D1 - D8 (Pins 2, 5-7, 12, 15-17, 19): These are the data inputs.
3. LE (Pin 11): Latch Enable input. When LE is high, the latches are transparent, allowing data from D to Q.
4. OE (Pin 1): Output Enable input. When OE is low, the outputs are enabled; when high, the outputs are in a high-impedance state.
5. VCC (Pin 20): Supply voltage pin.
6. GND (Pin 10): Ground pin.
The device is typically used in applications requiring temporary data storage, such as buffering or interfacing between asynchronous buses, due to its capability of retaining data and controlling output states.
Manufacturer
The SN74HCT573DWR is manufactured by Texas Instruments (TI). Texas Instruments is a global semiconductor company that designs and manufactures a wide range of electronic components and integrated circuits. TI is known for its innovation in the semiconductor industry, producing products that serve various applications, including consumer electronics, automotive, industrial, and communications equipment. The company is headquartered in Dallas, Texas, and has a significant presence in research, development, and manufacturing around the world.
Application
The SN74HCT573DWR is a high-speed, octal D-type transparent latch with 3-state outputs, commonly used in digital circuits. Its primary application areas include data storage and transfer, bus interfacing, and temporary data holding in microcontroller and microprocessor systems. It is also used in buffering applications to drive higher loads and interface between different voltage levels. This device is suitable for building memory address latches, I/O port latches, and for use in complex logic circuits where signal conditioning and data synchronization are required. Its compatibility with TTL logic levels makes it versatile in various digital applications.
Package
The SN74HCT573DWR is a type of integrated circuit with an SOIC (Small Outline Integrated Circuit) package. Specifically, it uses a 20-pin SOIC package, denoted by the "DWR" in its part number, which stands for the tape and reel packaging used for automated assembly processes.
